3643536020 has 48 divisors (see below), whose sum is σ = 7960608768. Its totient is φ = 1399265280.

The previous prime is 3643535983. The next prime is 3643536041. The reversal of 3643536020 is 206353463.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55604 + ... + 101876.

It is an arithmetic number, because the mean of its divisors is an integer number (165846016).

Almost surely, 2^3643536020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3643536020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3980304384).

3643536020 is an abundant number, since it is smaller than the sum of its proper divisors (4317072748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3643536020 is a wasteful number, since it uses less digits than its factorization.

3643536020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46440 (or 46438 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 3643536020 is about 60361.7098830045. The cubic root of 3643536020 is about 1538.7722856870.

Adding to 3643536020 its reverse (206353463), we get a palindrome (3849889483).

The spelling of 3643536020 in words is "three billion, six hundred forty-three million, five hundred thirty-six thousand, twenty".